[uterm]

Thanks for posting this!

As an electronics enthusiast, this really sheds a lot of light on different aspects of hardware/software development that I hadn't been exposed to before. I feel like there is a lot of tribal knowledge that people in the business or going to school for EE stuff are privy to that isn't always out there for the rest of us, so kudos for aggregating some of that.

along the same line, does anyone have further articles on hardware topics, like sourcing parts for commercial products? It's another part of electrical engineering and bringing products to market that I haven't seen much of online but would love to learn more about.

[nsajko]

Not sure if this is what you want, but it's a short read anyway; search for Second Sources:

* http://www.ganssle.com/tem/tem288.html

* http://www.ganssle.com/tem/tem289.html

[HeyLaughingBoy]

> sourcing parts for commercial products?

That's a topic onto itself. Is there something specific you're thinking about?

[uterm]

For sure, I totally realize those are huge topics, and many people have full time jobs just focusing one one aspect of that. I guess what I'm really looking for is a good overview of standard operating procedures and rules of thumb for purchasing parts and inventory management.

I've seen a lot of really cool hobby projects turned small run commercial products in the music/synthesizer world and I guess I'm curious how you would go about sourcing parts for something like that in way that's close to how it's done professionally.

Also, more specifically what sort of tools do people typically use for managing inventory? How about comparing prices/vendors? I imagine something more sophisticated than a simple spreadsheet would be in order and I have to figure it's different from company to company, but are their any widely accepted industry standard tool?

[HeyLaughingBoy]

For small to mid-level production (singles to mid-thousands per build), most shops will use a distributor like Digi-Key, Mouser or Arrow to source parts. Above that, you can start talking to manufacturers directly in some cases if you can't get good enough prices through distribution.

What throws this off is that a lot of shops these days use Contract Manufacturers (CM's). Since CMs are building boards for many different shops, they can purchase parts in larger volumes and get better pricing. They make it easier to outsource some of your manufacturing since you can just give them a BOM (Bill of Materials) and your PCB files and get complete, tested boards back. So you don't even need to deal with parts shopping, etc.

As far as inventory management, if you're not big enough to be using an ERP (Enterprise Resource Planning) system, it's likely a Quickbooks plug-in, a spreadsheet or something custom built.

IME, as long as they people can meet their BOM price target, they just buy from whoever they're used to dealing with.

I have a couple products in low-volume production manufactured in my basement. 90% of my components are purchased from Digi-Key because we're both in Minnesota (and Digi-Key is the best vendor I've ever dealt with) so most things I order arrive the next day without having to pay extra. They also have BOM tools on their site: I can create a bill of materials for a board to make it easier to order parts: just bring up the BOM and enter a number of units and it will create a shopping cart for me.

I'll occasionally look around for better prices on some high-cost parts, but it's hardly worth it at my low volumes: there really isn't enough price variation on most things.